Carbureter.



J`. E. RUSSELL.

.Patented Nov'. 19, 1912.

Inv@ 7142/: 0.7'

CARBURETER. APPLICATION FILED I'}}}3.5, 1912. v

JEBME E. RUSSELL, OF RUDID, .LOWA.

onnnunn'rnn.

. Specification of Letters Patent.

Patented Nov. 19, 1912.

Application filed. February 5, 1912. Serial No. 675,666.

To all whom it may concer-n.7

Be it known that l, JEROME E. Russie-LL, a citizen 'ot the lUnited States, residing at Rudd, in the county ot Floyd and State of lowa, have invented a certain new and usetul Carbureter, ot which the following is a specification.

My invention relates to and consists in certain improvements on the type of carhureters illustrated in my application tor `United States Letters Patent, tiled Feb. 28, 1911, Ser. No. 611,326.

Tn my present invention there is a vapor tube contained within the air tube and it is my object to provide means whereby the mixture within the vapor tube will immediately, atteipassing the spraying nozzle, be

^ shows a top or subjected to an increased velocity and to an increased degree ot vacuum to thereby vpro# duce a more perfect mixture' of the particles of gasolene with the air; and my object is further to provide a device of this kind in which, when the air is permitted to pass through the air tube, a proper proportion and quantity ot air will also enter and pass through the vapor tube.

My invention consists in certain details, in the construction, arrangement and combination of the various parts ot the device, whereby the' objects contemplated are attained, as hereinafter more fully set forth, pointed out Ain my claims and illustrated in the -accompanying drawings, in which:

Figure 1 shows a top or plan view of a carburetor embodying my invention. Fig. 2 shows a side elevation of same. Fig. 3 shows avertical, longitudinal, central, sec tional view ot same. Fig. 4f shows a perspective view oit the movable valve member for the airl tube. Fig. shows a similar view ot the stationary valve member. l? ig. G plan view ot the movable and stationary valve members i conibinod, the movable valve being in its closed position, and Fig. 'Y shows a detail view illustrating t-he inlet end ont the air and vapor tubes.

'Referring to the accompanying drawings, l have used the reference numeral 10 to indicate generally the casing of the carburetor. Admitted into one side o1 the casing 10 is an air tube 11 which passes through the body of the carlnlreter and discharges near the top into the laterally extended` discharge tube 12. This harge tube finally is ex tended straight upwardly 't3 and is pro vided with a. throttle valve la, oi? ordinary l l l l construction havin a lever 15. Arranged at one side of the car ureter body is a gasolene inlet chamber 16 provided with a supply pipe 17 at its lower end controlled by a needle valve 18. 'This needle valve is carried by a --lever 19 on which is a {ioat 2() within the carburetor chamber whereby the level of gasolene within the carburetor chamber may be maintained in a substantially uniform manner. This Afloat valve mechanism is of the ordinary construction and of itself forms no part of my present invention. At the bottom ot the oarbureter body is a drain valve'21 of ordinary construction. Arranged within the air tube 11 vis a smaller tube 22 which I have termed the vapor tube and whichextends from the inlet end of the air tube to the outlet endthereof. This vapor tube is characterized by having the inlet portion of it made larger in diameter than the out-letportion 23. At the juncture of the parts 22 and 23 is an enlarged chamber 24 into which a spraying nozzle 25 is inserted. The size of the enlarged chamber is such that when the nozzle is inserted in it the carrying capacity of the part 2a will be the same as the part 22. This nozzle is open at its lower lend into the gasolene chamber oi' the interior of the carbureter body and the nozzle is controlled by a needle valve 26 of ordinary construction provided with a controlling lever 27 At times it is desirable to have all of the air that Hows through the carburetor pass through the vapor tube and at other times it is desirable toihavc air pass through both the vapor tube and the air tube. In order to properly control the passage of air in this manner, I have provided a valve surrounding the upper end ot the vapor tube to control the passageway from the air tube. This valve comprises a stationary valve member 28 having openings therein and a movable valve member 29 capable oi covering or uncovering said openings. The movable valve member 29 is fixed to a stem 30 provided with a lever 31 and when this lever 31 is in one position the passageway through the air tube is unobstructed and when in its other position the passageway through the air tube is completely closed. ln all positions ot the valve the passageway through the vapor tube unobstructed. 1

ln order to support. the inlet end oit the vapor tube 22 and at the saine time to parwtially close 'the inlet end ot the air tubo, l

at its lower end.i

l in communication with the air tube il..

W hen this Valve is held open i partition shown i Figs. 3 and 7 and covering approniniately thelouer half of the .inlet opening of the air tube. 1Under ordinary circumstances this partition 39 will permit ci the entrance ot just the right proportion ot air through the air tube and air through the vapor tube. lf3 the partition 32 were omitted an excessive quantity of air would lion' through the tube and the amount ot air flowing through the vapor tube would be toosmall to carry With it a prooer amount of gasolene from the nozzle When the suction on the carbureter excessive and it is desirable to permit an unusual quantity of air to enter tub the snring actuated air inlet valve is oloene automatically. lfhis valve comprises r l open at both ends, the lower end bein have -nrovided a small cu Ill m s the tube 33 is a partition Se through uhici. the ifaire stem 35 is slidingly extended, ii; the bottom of' the valve stem 35 is a valve which is normally held seated against the lower end of the valve 33 means tie spring 37. An adjusting nut 38 provides for regulating the tension of the springn by 'the suction otair Within the air tube ll. greater quentityoiz air may be made to pass through the air tube ll than is possible when the valve is closed.

`ln practical operation and assuming' that my improved carbureter is connected inthe .ordinary manner with an internal combustion engine, and assuming that it is desired to start up the engine when it is cold, l have found that the best results are obtainedbj,7 the use of an unusually rich mixture of Vapor. ln order to obtain this rich mixture l close the movable valve member 29, thus completely preventing the passage` of air through the air tube so that the entire suction of the engine is applied to the vapor tube. By my improved construction ot vapor tube, itis obvious that the air -will be :forced through. the vapor tube at a vvery rapid rate, thus taking up from the notzlc/ 525 a large amount of gasolene in proportion to the amount of air, and thus making what is\termed a relatively rich. mixture. TWhen an unusually largeamount orp gasolene is taken up in the manner just described, it is desirable to commingle the gasolene with the air to the greatest possible extent so that the particles of gasolene Will be breiten up as much as possible. For this purpose lhave so arranged the Vapor tube that immediately after the gasolene comniingles with the air the mixture of gasolene and air will be subjected to an increased velocit and to an increased degree of vacuum, t us permitting kthe vapor to expand and the particles of liquid fuel to be broken up. l obtain this result by hating the passageway from the Y cenere dischargeend of the nozzle 25 to the discharge end ot the vapor tube of smaller ca pacitj/ than the other parts of the vapor tube and of the discharge pipe into the engine.

fitter thc engine to 'which the curbureter is attacher has become Warm and it is desired to operate it an economical and eilicient manner a larger proportion of air should be supplied to the mixture, This is done by manipulating' the valve stein 3l to open trie valve member 29, 'whereupon a quantity of air passes through the air tube und a certain quantity of air passes through the Vapor tube, a current ot' an? in the Vapor 'tube being the sole means oi taking up the gasolene trom the nozzle 25. immediately after the Vapor 7passing through the vapor tube is discharged from the vapor tube it will then. be coininingled with the air through the air tube thus the proper mixture will be formed,

lWhen the 'engine is running at e, rela-- tively .high speed it is desirable to increase the proportionate amount -of air. This l have provided for by means of the automatic air inlet valve arranged on the inlet portion of the air tube,

l claim as my invention:

L ln a carbureter, the combination of a suitable casing, a level maintaining means for liquid hiel within the casing', an air tube extended through the casing and arranged to discharge upwardly, a valve for' controllingl the discharge end of the air tube, a vapor tube open et both ends arran ed Within the air tube and extending the tull length of the air tube, a nozzle for liquid fuel admitted into the Vapor tube, and means for partially closing the inlet end of the air tube 'Without affecting the inlet end of the Vapor tube.

2. ln a carbureter, the combination of a suitable casing, a level. maintaining ineens 'for liquid fuel Within the casing, an air tube extended through the casing and ar ranged to discharge upwardly, a Valve for controllingl the discharge end of the air tube, a Vapor tube open at both ends arranged Within the air tube and extending the full length of the air tube, a nozzle for liquid fuel admitted into the vapor tube, and a partition arranged across the lower portion of the inlet end of the air tube, said partition being also arranged to' support the inlet end of the vapor tube Without obstructing it. n

3. ln a carbureter, the combination of a suitable casing, a level maintaining means tor liquid fuel Within the casing, an air tube extended through the casing and arranged to discharge upwardly, a Valve. for controlling the discharge end of the air tube, a vapor tube openat1 both ends an renged Within the air tube and 4extending iso no4/eme the full length of the ailI tube, a nozzle for liquid fuel admitted into the Vapor tube, means for partially closing the inlet end of the air tube Without affecting the inlet end of the Vapor tube, and a spring actuated air inlet valve arranged on the en tube and designed to open automatically to increase the air carrying capacity of the airvtube upon an excessive suction being` applied to the discharge end of the aii` tube.

e. ln a carbureter, the combination of an air tube open at both ends, means for reoulating the passage 0i air through the .c air tube, a vapor tube comprising a member 'the outlet portion of the air tube, the latter member beingof less carrying Capacity than the former, there being at the intersection A o' said two members an enlarged chamber, and a nozzle for liquid fuel admitted into said enlarged chamber, for the purposes stated.

Des Moines, Iowa, January 17, 1912.

' JEROME E. RUSSELL.

llVitnesses l/ViLLniu J. Fmavnnfr,

FRANK LINGENFELDER. 

